Let's begin with Drupal.
This is the name given to the second most widely used (behind WordPress) open source Content Management Systems (CMS) for general web development. Created in 2001, Drupal is now — as we enter 2014 — a fully mature CMS in its 7th major iteration (version 8 is currently in development).
Drupal is an English rendering of the Dutch word "druppel", which means "drop" (as in "a water droplet").[Source: Wikipedia]. The name was taken from the now-defunct Drop.org website, whose code slowly evolved into Drupal.